The cross-cutting questions that decide whether a piece of equipment can actually be fitted in your house, and what an inspector will say about it. This is where the manufacturer’s documentation and the adopted code most often fail to agree.
Disclosure. This page contains affiliate links; we may earn a commission on qualifying purchases at no cost to you. As an Amazon Associate I earn from qualifying purchases. Every figure on this site is reproduced from a published manufacturer manual, standard or government document and linked so you can check it yourself. We do not own or test the products we write about, and we say so on every page rather than implying otherwise.
Nothing in this section is a specification. Every page reproduces
published figures and shows the arithmetic so you can check it. The circuit or the pipe that ends up in your
wall has to be designed and installed by a licensed trade working to the code edition your jurisdiction has
adopted, and inspected. Bring them the equipment's manual, not a printout of a website.