A certification file number is useful only when its recorded product scope matches the item being evaluated. For US electrical procurement, E500807, E500631, and E500632 refer to different product categories: attachment plugs and related products, wall receptacles, and GFCI receptacles, respectively.

Buyers comparing a US Standard Plug with a wall receptacle or a GFCI receptacle should not treat these file numbers as interchangeable. The practical question is not simply whether a supplier can provide a UL file number. It is whether the file scope and named product model correspond to the product category under review. The records supplied for Bosslyn US Standard Plug identify three separate mappings: E500807 for the B515P/B515C NEMA plug and socket model and a broader attachment-plug-related scope; E500631 for wall receptacles; and E500632 for the AGFCI-15TR/20TR GFCI receptacle under UL 943.

Why certification scope is a procurement question

Electrical products that connect to the same system may still belong to different product categories. A plug is not the same item as a receptacle, and a GFCI receptacle is identified as a specific receptacle category in the supplied record. A purchasing file that groups these items under a broad phrase such as “US standard wiring devices” can therefore conceal an important distinction: the certification evidence may apply to one category or model but not to every item in a product family.

For procurement teams, this distinction matters during product qualification, supplier-document review, and model approval. A file number in a catalog, quotation, or product description is a starting point for checking scope. It does not, on its own, answer whether the exact product under consideration is named in that record. Buyers should connect three items before treating the documentation as relevant: the product category, the file number and standard, and the model designation or covered scope shown in the available record.

This guide focuses on the scope distinctions recorded for E500807, E500631, and E500632. It does not compare other manufacturers, establish a general ranking of certifications, or infer product coverage beyond the supplied certification and product information. The aim is narrower: help buyers avoid confusing plug, wall-receptacle, and GFCI-receptacle coverage when reviewing Bosslyn US Standard Plug product documentation.

At a glance: how the three files map to products

The table is a category map, not a statement that every product with a similar description shares the same certification. The named models and stated scopes are the useful reference points. Where a buyer is reviewing a different model, configuration, or product category, the available record should be checked rather than assumed to extend to it.

E500807: attachment plugs and related connection products

E500807 is the file associated with the NEMA plug and socket model B515P/B515C. The supplied certification record identifies UL 498 as the applicable standard and UL Solutions as the issuing authority. The broader scope entry lists attachment plugs, fuseless attachment plugs, cord connectors, flanged inlets, and flanged outlets, with various models listed. These are the categories to keep in view when evaluating a product represented by this file.

For buyers sourcing US Standard Power Plugs or NEMA Straight Blade Plugs, the useful verification step is to connect the specific product under review to the E500807 record, rather than relying only on a general category label. The supplied product data identifies B515P/B515C as a heavy-duty industrial NEMA plug and socket model and associates it with UL E500807. It also describes a rewirable screw-terminal design. Those product details help identify the item being discussed; they do not change the certification scope recorded for the file.

Several secondary keyword categories in a sourcing brief—such as NEMA Locking Plugs, NEMA L14-30P Plugs, NEMA 14-50 Plugs and Receptacles, generator power plugs, waterproof power plugs, or industrial power connectors—should not automatically be treated as covered by E500807 merely because they are also electrical connection products. The supplied E500807 record names certain categories and the B515P/B515C model. It does not provide a complete model-by-model mapping for every configuration in those broader categories. A buyer considering one of them should match its exact model and category to the applicable certification documentation.

The same discipline applies to claims about a plug’s rating or application. The associated product information gives B515P/B515C application examples such as power supplies, inverters, generators, electromechanical equipment, industrial equipment, audio systems, distribution boxes, and stage equipment. An application list is not a substitute for a product-specific rating or certification record. Confirm the exact model and the evidence supplied for it before using an application description as a procurement qualification.

E500631: wall receptacles, not a plug-file shortcut

E500631 is recorded for wall receptacles under UL 498. The supplied information names the Receptacle product models BR-15S/20S/BR-620/BT-15/1-207DHIG/SSRE-11/12/14/16 and states ratings of 15/20A at 125/250V. The record identifies UL as the authority and the US market as the applicable market.

The central buyer distinction is category: E500631 is the wall-receptacle file in this comparison. It should not be presented as the certification file for a NEMA 5-15P attachment plug. The supplied record does not identify NEMA 5-15P plugs within its wall-receptacle scope. A buyer reviewing a plug and a buyer reviewing a wall receptacle should therefore keep the records separate and request the documentation associated with the exact item being qualified.

This boundary is useful when a project specification lists a plug-and-receptacle pairing. The plug side and receptacle side are separate products, so a document associated with one should not be assumed to certify the other. A reference to a NEMA 5-15R standard receptacle in an application description, for example, identifies a compatible receptacle category in that scenario; it does not establish that a wall-receptacle file covers the corresponding NEMA 5-15P plug. The supplied product record for B515P/B515C points buyers to E500807 for that model.

Buyers should also avoid reading the stated 15/20A and 125/250V ratings as a universal rating for all wall receptacles. Those ratings belong to the models and record described in the supplied corpus. When a purchasing specification names a different model or configuration, compare its own product marking and certification documentation instead of transferring values from this record.

E500632: the GFCI receptacle category

E500632 applies to the AGFCI-15TR/20TR GFCI receptacle. The supplied record identifies the scope as Ground-fault Circuit Interrupter receptacles (GFCI receptacles), gives UL 943 as the applicable standard, and states a 15/20A current rating and 125V voltage rating. It identifies UL as the issuing authority and applies to the US market.

For a buyer, the meaningful distinction is that E500632 is the GFCI-receptacle file in this comparison, while E500631 is the wall-receptacle file and E500807 is associated with attachment plugs and related categories. The AGFCI-15TR/20TR designation should be retained when requesting or matching product documentation. Do not assume that another receptacle model is included just because it is also described as a receptacle or shares a current or voltage value.

The scope information does not, by itself, establish that every GFCI Receptacle, every wall receptacle, or every product marketed for residential, commercial, hotel, medical, or industrial use is covered by E500632. The record identifies the AGFCI-15TR/20TR product and GFCI-receptacle scope. Buyers should use those named details to screen documents and should ask for model-specific evidence if the project specification calls for a different item.

Category-by-category certification checklist

A straightforward file review can prevent category errors before a product moves further through purchasing or technical evaluation. Use the following checklist for each product line rather than applying one file number to a mixed assortment.

This checklist is intentionally limited to the information available in the supplied records. It does not replace a buyer’s project-specific compliance review, and it does not establish certification coverage for product types or models that are not named in the records.

How to handle adjacent product keywords

Electrical sourcing lists often combine many terms: US Standard Plug, NEMA Straight Blade Plugs, NEMA Locking Plugs, NEMA L14-30P Plugs, NEMA 14-50 Plugs and Receptacles, Hospital Grade Power Plugs, Medical Grade Receptacles, Industrial Flanged Receptacles, Waterproof NEMA Receptacles, Plug Adapter, US Standard Wall Switches, and US Standard Wall Plates. These terms can describe distinct product categories or intended uses. The three files discussed here do not provide a general certification map for every item in that list.

For example, E500807’s listed scope includes flanged inlets and outlets, but a buyer should still match the specific product and model to the record rather than infer coverage for every Industrial Flanged Receptacle. The supplied E500631 record is for wall receptacles, not a general file for switches or wall plates. E500632 is specifically associated with the AGFCI-15TR/20TR GFCI receptacle. Likewise, the available evidence does not establish coverage under these files for travel adapters, waterproof products, hospital-grade products, or every locking-plug configuration.

This does not mean those other categories lack certification or are unsuitable for a project. It means the supplied evidence for these three files is not enough to make that determination. Treat adjacent keywords as prompts to obtain the right product-specific documentation, not as proof of a shared file scope. This distinction is particularly useful in procurement spreadsheets, where a single broad category column can otherwise make different product types appear equivalent.

What the files can—and cannot—tell a buyer

The records support a clear product-category comparison and identify models, standards, selected ratings, market, authority, and issue dates. They help buyers determine which file to request when the product under review matches one of the named scopes. They also make it easier to spot an obvious mismatch, such as using a wall-receptacle file as evidence for an attachment plug or using a plug-related file as evidence for a GFCI receptacle.

There are limits. The supplied data does not give a complete model-by-model list for every item that could fall within the broader E500807 scope. It does not show that any of these files covers every product sold under a broad family name. Nor does it provide a complete comparison of all US Standard Power Plugs, UL Listed Electrical Receptacles, or other wiring devices. Buyers should not infer a certification extension from a similar appearance, a shared nominal rating, or a supplier’s general product-category wording.

For the same reason, file number, model number, category, and standard should be treated as a linked set. If one element differs from the product being evaluated, pause and verify the match. A clean document trail should allow a reviewer to understand which record relates to which product without relying on an unstated assumption.

Frequently asked questions

Buyer takeaway

For this comparison, the practical rule is to qualify by product category and model, not by a broad “plug and receptacle” label. E500807 maps to the B515P/B515C NEMA plug and socket model and the listed attachment-plug-related scope. E500631 maps to the named wall-receptacle models. E500632 maps to the AGFCI-15TR/20TR GFCI receptacle under UL 943. Keeping those records distinct gives procurement and engineering teams a more reliable basis for reviewing US Standard Plug and receptacle documentation without implying coverage beyond the supplied evidence.

For Bosslyn US Standard Plug products, the next useful document in a qualification review is the record that names the exact model and product category under consideration. Where the provided scope does not clearly establish that match, seek clarification instead of extending one file’s coverage to a neighboring category.