![]() The 1/3 rule says that the most significant hole diameter for a 12/2 Romex is 1 1/8 inches. What Is the Maximum Hole Diameter for 12/2 Romex? This ensures that the structure is strong enough to hold the weight of the wires and prevents damage from happening. This rule says the hole shouldn’t be more significant than one-third of the framing’s width. ![]() ![]() Pulling the Romex through the wall might be easier if the gap is more significant.īut it’s essential to follow the 1/3 rule. Before anything else, it ensures that the hole is big enough to fit the wire, which keeps it safe and secure. But why does the hole’s size matter so much? How Important Hole Size?įor many reasons, the hole’s size is significant. This makes sure the wire can go through safely and meets the rules. For 12/2 Romex, you need to hit a spot at least 1.25 inches across. What size hole should you drill for a 12/2 Romex? That’s the main question. The bare grounding conductor improves electrical safety by allowing fault currents to flow. The wire comprises two insulated conductors, one bare grounding conductor, and an extra-insulated conductor. This type of wire is often used for lighting fixtures, outlets, switches, and other home circuits that need to carry more power. Figuring Out What The 12/2 Romex Is Forġ2/2 Romex is made for working with electricity in various ways in homes. It is usually used in homes for lights and other general-purpose electrical circuits. This kind of Romex has two 12-gauge conductors. The number “12/2” tells you how thick the wire is and how many conductors it has. Knowing the size of the 12/2 Romex wire is essential before discussing hole sizes. Why using a bigger hole diameter is a good idea.Recommended Hole Diameter for 12/2 Romex.What Is the Maximum Hole Diameter for 12/2 Romex?.Figuring Out What The 12/2 Romex Is For.
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