Drop Wire Mast Bracket
- Supports the service entrance mast on a customer-side drop wire installation
- Single, double, and triple-drop configurations (200 / 250 / 300 mm projection)
- Hot-dip galvanized to ASTM A-123 (≥86 μm)
- Drop wire clamp pre-attached on most variants
Technical Specifications
| Catalog No. | Type | Projection (mm) | Bolt | Weight (kg) | Surface |
|---|---|---|---|---|---|
| RAX-DWB-1 | Single Drop | 200 | M16 | 0.9 | HDG |
| RAX-DWB-2 | Double Drop | 250 | M16 | 1.6 | HDG |
| RAX-DWB-3 | Triple Drop | 300 | M20 | 2.4 | HDG |
Application & Installation
Where it is used
- Residential service entrance from utility pole to customer building
- Light-commercial service drops (single-phase 120/240 V or three-phase 208/480 V)
- Joint customer-pole connections where multiple drops originate from one pole
- Customer-side mast supports on overhead service installations
- Temporary construction service drops
Installation sequence
- Position the bracket at the pole elevation specified by your service drop drawing (typ. 18–25 ft above grade).
- Through-bore at 9/16 in (M16) or 11/16 in (M20).
- Install the bracket with a square washer on the back side of the pole.
- Attach the drop wire clamp(s) at the outboard end — verify the cable approach angle is correct for the customer’s mast position.
- Tighten the clamp on the cable; verify NEC clearance requirements for the conductor type and voltage.
Buyer’s Guide: Drop Wire Mast Bracket
1. When Do You Need a Drop Wire Mast Bracket?
A drop wire mast bracket supports a service drop conductor at the customer-side end of the run from the utility pole. The bracket extends 200 to 300 mm out from the pole face so the conductor approaches the customer’s service mast at the correct angle for NEC clearance compliance — typically a 36 inch minimum sag clearance over residential driveways, more over commercial vehicle paths. The single-drop variant handles standard residential service (200 A or less); double and triple variants are for poles serving multiple customers from one pole-top transformer.
The drop wire clamp at the outboard end of the bracket accepts standard service drop hardware — #6 through 4/0 AWG copper or aluminum, with the clamp jaw sized to the conductor diameter. NEC Article 230 governs the service-drop construction; refer to that section plus local utility specs for the exact clearance requirements in your jurisdiction. The DWB-3 with M20 bolt and 300 mm projection handles up to 200 A service drops carrying both primary and neutral conductors on a single bracket.
2. How to Choose the Right Size
Pick by service-drop count.
- RAX-DWB-1 — single residential service drop (most-ordered)
- RAX-DWB-2 — double drop for adjacent customers or multi-phase
- RAX-DWB-3 — triple drop, light-commercial multi-tenant
Custom projections (150–500 mm) and clamp jaw sizes available. 5–7 day tooling, 200-piece minimum.
