You're right to be cautious and double-check. While the specific SABC rules from residential codes don't directly apply to commercial settings like assisted living facilities, there are still important considerations.Here's a breakdown of what to consider:1. NEC and Local Codes Prevail

Commercial electrical work falls under the National Electrical Code (NEC), and your local codes may have amendments or additional requirements. That's the first place to look.2.

General Purpose Receptacle Requirements (NEC 210.60 and others)

The NEC specifies general receptacle requirements for dwellings. Although an assisted living place is not considered a "dwelling", there may be a similarity.

Ampacity

Ensure the existing dining area circuit has sufficient ampacity to handle the additional load of an exterior receptacle. Calculate the anticipated load of the exterior receptacle (even if it's just for occasional use) and verify the circuit can handle it.

GFCI Protection

The exterior receptacle MUST be GFCI protected (NEC 210.8). You mentioned this, so that's good.

Location and Accessibility

The exterior receptacle needs to be in a readily accessible location.

Dedicated Circuits

Consider if a dedicated circuit is more appropriate for the exterior receptacle, especially if it's likely to be used for significant loads (power tools, high-draw appliances).3.

Load Calculations (NEC Article 220)

Crucially, perform load calculations according to NEC Article 220 to ensure the existing dining circuit is not overloaded by adding the exterior receptacle. This is more than just a quick estimate. It's a formal calculation based on the connected loads, demand factors, and other relevant parameters.4.

Life Safety Code (NFPA 101)

Depending on the specific occupancy classification of the assisted living facility (which you need to determine), the Life Safety Code (NFPA 101) might have additional requirements related to electrical safety and power reliability. While not directly related to your receptacle question, it's a good idea to check.5.

AHJ (Authority Having Jurisdiction)

This is the most important step. Before doing any work, contact your local electrical inspector or the AHJ. Explain your plan and ask if there are any specific local code requirements or interpretations that apply to this situation. They may have insights or restrictions you're unaware of. Their approval is essential.6.

Documentation

Document your load calculations, circuit modifications, and the AHJ's approval. This will be valuable for future reference and inspections.7.

Considerations specific to assisted living facilities Maintenance

How often is the exterior receptacle likely to be used and will the assisted living facility staff or residents have access to the receptacle?

Safety

If residents have access to the receptacle will they be using electrical tools and equipment? Consider all use cases and safety implications.

In summary: You can't simply assume that because residential SABC rules don't apply, it's automatically okay to tap into the existing dining circuit. A careful load calculation is essential. GFCI protection is mandatory. Contacting the AHJ before starting work is crucial.* Consider a dedicated circuit for the exterior receptacle if the load is significant or if you have any doubts about the existing circuit's capacity.By following these steps, you'll ensure the installation is safe, code-compliant, and meets the needs of the assisted living facility. Good luck! Flag for review