Solid strand aluminum for Hot water heater

Came across solid strand aluminum for a hot water heater yesterday in a new home construction house. 30 amp, 8 gague wire. Is this OK? I thought it was odd using solid strand in new home construction.



Was the house wired with MC AP cables or type NM?

That was my guess too. If it’s MC-AP then it’s fine, that aluminum conductor can just be cut off at the connector.

It was all type NM.



I think that might be a bond wire going to the WH although if #8 the size is incorrect. Did it terminate on the pipe or in the wiring compartment?

Can you post a pic of the top right of the panel above the main breaker?

It was actually for dryer- looking back on my notes